A kind of control method and system for battery capacity equalization

A control method and balanced control technology, applied in battery circuit devices, AC network load balancing, secondary battery repair/maintenance, etc., can solve problems such as low compatibility, inability to output power normally, and inability to flexibly match usage requirements, etc. Achieve accurate balance control and high compatibility

Active Publication Date: 2022-08-09
HUANENG CLEAN ENERGY RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present application provides a battery capacity balancing control method and system to at least solve the technical problems in the related art that the power required by the total control system cannot be output normally, and the compatibility is low, and different usage requirements cannot be flexibly matched.

Method used

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  • A kind of control method and system for battery capacity equalization
  • A kind of control method and system for battery capacity equalization
  • A kind of control method and system for battery capacity equalization

Examples

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Embodiment 1

[0025] figure 1 A flowchart of a method for controlling battery capacity equalization provided according to an embodiment of the present application, such as figure 1 As shown, the method includes:

[0026] S101: Acquire the state of each battery in each battery cluster of an energy storage system, and determine whether there is a battery cluster with abnormal battery state in the energy storage system based on the state of each battery;

[0027] It should be noted that the determining whether there is a battery cluster with an abnormal battery state in the energy storage system based on the state of each battery includes:

[0028] If the number of batteries in an abnormal state in the battery cluster is greater than or equal to 1, the battery cluster is determined to be an abnormal battery cluster.

[0029] S102: If there are battery clusters with abnormal battery states in the energy storage system, use a current limiting distribution mode to balance the capacity of each b...

Embodiment 2

[0071] Figure 4 A structural diagram of a battery capacity equalization control system provided according to an embodiment of the present application, such as Figure 4 As shown, the system may include:

[0072] The obtaining module 100 is configured to obtain the state of each battery in each battery cluster of the energy storage system, and judge whether there is a battery cluster with abnormal battery state in the energy storage system based on the state of the battery;

[0073] The first balance control module 200 is configured to use a current limiting distribution mode to balance the capacity of each battery cluster in the energy storage system if there is a battery cluster with an abnormal battery state in the energy storage system;

[0074] The second balance control module 300 is configured to, if there is no battery cluster with abnormal battery state in the energy storage system, use an equalized power mode or a state-of-charge balance mode to balance the capacity...

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Abstract

The present application provides a battery capacity equalization control method and system. The method includes: acquiring the status of each battery in each battery cluster of an energy storage system, and judging whether there is a battery in the energy storage system based on the status of each battery battery clusters with abnormal states; if there are battery clusters with abnormal battery states in the energy storage system, the current limit distribution mode is used to balance the capacity of each battery cluster in the energy storage system; if the energy storage system If there is no battery cluster with abnormal battery state in the energy storage system, the capacity of each battery cluster in the energy storage system is balanced and controlled by using the power sharing mode or the state-of-charge equalization mode. The technical solution proposed in this application has a high degree of compatibility and can flexibly match different usage requirements.

Description

technical field [0001] The present application relates to the technical field of energy storage converter control, and in particular, to a control method and system for battery capacity balance. Background technique [0002] With the development of energy storage technology, the energy storage converters in the energy storage system correspond to the battery clusters one by one. By adjusting the battery balance of the energy storage converters, the power required by the total control system can be met. The power is usually controlled by the general control system. When faced with a large number of energy storage converters, the control center cannot control the battery balance of each energy storage converter in detail, and the control complexity is high, resulting in the need for the overall control system. The power cannot be output normally, and the compatibility is low, and it cannot flexibly match different usage requirements. SUMMARY OF THE INVENTION [0003] The pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00H02J7/06H02J3/32H01M10/42H01M10/44
CPCH02J7/0016H02J7/0048H02J7/00712H02J7/06H02J3/32H01M10/4207H01M10/425H01M10/441H02J2207/20H01M2010/4271Y02E60/10
Inventor 王宁刘明义曹曦林伟杰宋太纪郭敬禹韦宇曹传钊雷浩东陈志强陆泽宇张鹏刘海林宋吉硕裴杰孙周婷
Owner HUANENG CLEAN ENERGY RES INST
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